Changes between Version 6 and Version 7 of BOOK_PRINTING_R1
- Timestamp:
- 10/08/09 15:03:02 (16 years ago)
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BOOK_PRINTING_R1
v6 v7 28 28 29 29 = Design = 30 The main idea is to make the printing draw the scene on the printer. The needed logic for this is already written for the needs of the PDF export. So, most of the current classes are useless. Remove: 31 * DefaultSophiePrintable 32 * AbstractPrintItem 33 * PrintExtensionPoint 34 * PageSophiePrintable 35 * PrintToFileItem 36 * SophiePrintable 37 * HotTextSophiePrintable 38 * PrintToFileDialog 39 * PrintToFileDialogInput [[BR]] 30 We will use the java.awt.print API. The simplest workflow for printing with this API consists of the following steps: 40 31 41 * In the print logic, modify ON_PRINT, so that it should create a new printerJob, which will print a java.awt.print.Book. The book will consist of a PagePainter which can print a page by given index. The job will also set the default page orientation based on the book page size. 42 * Create PagePainter which implements Printable. Every pagePainter is constructed from the bookView the page is located in. It will have a print(...) method, which calculates the drawing rectangle and paints the scene (using SceneHelper) to the given graphics. It will also scale the page so that it will fit into the print format. 32 1. Obtain a java.awt.print.PrinterJob instance. 33 2. Pass a java.awt.print.Printable or java.awt.print.Pageable object to the PrinterJob instance (we will use Pageable since it fits our needs better). 34 3. Call PrinterJob.printDialog() and if it returns true, call PrinterJob.print(). 43 35 36 The only thing we need to do to make this work in Sophie2 is to create a custom Pageable object at step 2. We will create a java.awt.print.Book (which implements Pageable) by passing it a PagePainter (implements Printable) object which can print each page of a Sophie2 book. PagePainter's constructor will have one parameter of type BookView. The PagePainter.print method will draw a page from the BookView (by given page index) to a given Graphics2D object. The drawing will be done in the exact same way as "export to pdf". 37 38 As a summary: 39 * The class PagePainter will be added 40 * The PrintLogic.ON_PRINT.handle method will be refactored to work according to the above workflow 41 * The following classes will be removed: 42 * DefaultSophiePrintable 43 * AbstractPrintItem 44 * PrintExtensionPoint 45 * PageSophiePrintable 46 * PrintToFileItem 47 * SophiePrintable 48 * HotTextSophiePrintable 49 * PrintToFileDialog 50 * PrintToFileDialogInput 44 51 45 52 = Implementation =
